.da{
    display: flex;
    .da-da{
        display: flex;
        div{
            &.active{
                border: 1px solid red;
                color: red;
            }
            width: 50px;
            height: 30px;
            border: 1px solid #ccc;
            margin-left: 10px;
            border-radius: 5px;
            text-align: center;
            line-height: 30px;
        }
    }
}